If you’re traveling to Finland and want to get out and explore the country at your own pace, renting a car is your best bet. Car rentals and fuel are expensive in Finland, but it definitely gives you more flexibility.
Should you prefer to stay in the Helsinki area, an airport taxi can get you to downtown or to your hotel. The city of Helsinki also has an excellent transportation network that includes buses, trams, metro trains and ferries.
Another option for long distance travel throughout Finland is the VR train service. VR has a terrific website that allows you to buy train tickets online, often at substantial promotional discounts.